# should backfill
# three jobs and three users
# the first one has a huge gap between the estimation and the actual duration                     
# the last one is tiny and should be backfilled

# arrival time; job id == finishing time; user estimated duration; number of required nodes; actual duration  
0 10 19000 99 10 0 0 uid_1
1 14 4 2 4 0 0 uid_2
2 3 1 1 1 0 0 uid_3
